Closure for tubes and the like



Jan. 18, 1938'.- K. n. HElMscH Er A1. 2,106,028

' cLosuRm FOR TUBES AND THE LIKE Filed Maron 28, 193e llilllli PatentedJan. 1s, 193s 2,106,023-

uNi'ren srA'ri-:s PATENT. OFFICE.

2,106,028 y cLosUaE Foa 'runes AND 'rmi Lms Karl David Heimsch,Stuttgart, Germany, 'and vOtto Brassart,.Zurich, Switzerland, assignors,by direct and mesne assignments, to Julius Bloch, Frankfort-on-the-Main,Germany Application March 28, 1936, Serial No. 71,443

In Germany March 29, 1935 3 Claims. (Cl. 221-80) This invention relatesto a closure for'tubes and .ing of the content of the tube can get intothe the like which is 'characterized in that in thev screw threads (Fig.1). If the screw head f is screw cap acentral aperture is provided bywhich punscrewed, the open ends o cf grooves n are the passages in thetube headV are covered or ununcovered and an anular space is formedbetween 5 covered if the screw cap is turned a part rotation. cone l andthe inner wall oi the aperture i, 5 A closure head with passages isinserted in the through which space the content of the tube can neck ofthe tube. The top end of the closure'head .ilow as soon as the tube a ispressed. is conical so that, li the screw cap is completely As shown inFigs. 5 and 6, the head k can have screwed on, the inner conical surfaceof the aperchannels p instead of grooves n. The open ends ture in thescrew cap bears tightly on this conical 0' of the channels p may extenddownwards to the m surface of the top ofthe closure head, whereas. ifdash-line r so that they are large. the screw cap is unscrewed, anannular gap is The closure head k and the screw cap f can be formedbetween the central aperture and the clomade of the same material astube a or oi artisure head. y icial resin or any other artificialsubstance; they This closure possesses the advantage that the arepreferably made by PreSSinE- The diameter' l5 screw. cap cannot get lostas it remains on the of head k is so large that, if inserted into thetube tube head during dispensing of the content. neck, it fits tightlyin the Same- If desired, the

Several embodiments of the invention are llclosure head 1c may be`*screwed into the tube neck lustrated by way of example in theaccompany- @Juilk the lower edge 0f the Screw Cap may be f 2@ lngdrawing in whichzstraight instead of being curved inwards, so that 20Fig. l. shows the tube closure in closed state the Screw Capcan beremoved from the tube.

in vertical section. i We claimz- I Fig. 2 is a similar view` showingthe screw cap 1. A closurel for tubes, comprising 1n combinapartlyunscrewed so that the closure is open. tion an externally screw threadedtube neck, a

Figs. 3 and 4 show the closure head in elevaclosure head consisting of acylindrical lower part 25 tion and in bottom plan view. adapted to beremovably tted in said tube neck Figs. 5 and 6 are views similar to 3and 4 showin frictional contact therewith and of a conical ing amodication. upper part with a base corresponding to the outer `In theneck b of a tube'a a closure head k: is in-A diameter of said tube neckand adapted to vbear 3o serted which has a number of vertical grooves ntightly against the top thereof so that its coni- :'30

in its surface. The top part l of the head 7c procal surface forms acontinuation of the outer surjects from the tube neck b and is conical.This face of said tube neck, said head having 8 pluraltoppart l formsthe closure proper together with ity of passages extending from itslower end to a screw cap ,f having a central aperture i in its theconical upper part below the top thereof, a.

upper end. The grooves nare outwardly curved screw cap adapted to bescrewed on to said neck, 35 at their upper ends and form the outlets ofor the anv inwardly directed flange on the lower end of contents ortube a. The tube neck b is extersaid cap adapted to limit the outwardmovement nally screw threaded at c, the internal screw of said cap onsaid neck, said cap having a cen-l thread g7 of cap f being screwed on.The lower tral aperture and a conical upper end. corre- 40 edge h of thescrew cap ,f isbent inwards so that spending to the upper part of saidhead, said cap unscrewing of the cap f is limited by this in- -adaptedwhen screwed home to bear vwith its wardly bent edge h. Ihe screw capremains conical upper end against the conical part of thereforepermanently on the tube and cannot said head and close said passagesvand when un- Aget lost. The inner wall of the open end i of the screwedto form an outlet passage for the conscrew capfis conical in accordancewith the ccnitents of theltube through said passages inA said 45 cal tcpend l of the closure head lc. The outer head and through .the Centralaperture -in Seid surface o1' the upper end g of the tube neck b is cap.e l conical and forms a continuation oi' the conical 2. A closure vasspecied in claim 1, in which surface of head l. The conical inner walli' of the passages are formed by grooves in the wall y50 the screw capcovers the conical surfaces l of of said head becoming shallower towardstheir 50 head k and. when the cap is screwed home, th'e upper end. lupper end c of the tube neck. If the cap f is 3. A closure as specifiedin claim 1, in which screwed home, the inner wall i' presses tightly thepassages are formed by eccentriclongitudinal against the conicalsurfaces l and q so that the bores.

open ends o of the grooves n are air-tightly KARL DAVID HEIMSCH. 55

closed also in downward direction so that llnoth O'ITO BRASSART.

